AUSTRALIAN AND OVERSEAS TELECOMMUNICATIONS CORPORATION LIMITED

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5500875 QAM encodingExpiredJun 25, 93Mar 19, 96[H04L, H03D]
5272747 Mobile pay telephone systemExpiredMay 08, 91Dec 21, 93[H04M]
5099496 Adaptive equalizersExpiredSep 10, 90Mar 24, 92[H04L]
4300233 Noise assessment of PCM regeneratorsExpiredNov 13, 79Nov 10, 81[H04B]

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